Corsair TX750 V2: New and Improved
by Martin Kaffei on May 16, 2011 6:55 PM EST- Posted in
- Cases/Cooling/PSUs
- Corsair
- PSUs
- 80Plus Bronze
- 750W
- TX V2
Noise Levels
| Sound Pressure Level | |
| Load | dB(A) |
| 10% | 24 |
| 20% | 24 |
| 50% | 25 |
| 80% | 32 |
| 100% | 36 |
| 110% | 38 |
The TX750 won't be a great fit if your goal is to create a silent or near-silent PC. On the other hand, the higher noise levels generally correspond directly with airflow, so this PSU should help reduce temperatures in your PC, which is especially important for SLI or CrossFire setups. We would still like to see less noise at low loads, since 75W output means there shouldn't be much heat to deal with. As usual, the fan rotates at full speed during overload and is close to 40 dBA. Most computers should not reach this level, but it is good to know that this PSU is still not the loudest one—we have seen worse results on other PSUs.
Efficiency and PFC
| 115VAC, 60Hz | ||
| Load | Efficiency | PFC |
| 10% | 79% | 0.926 |
| 20% | 85% | 0.950 |
| 50% | 86% | 0.980 |
| 80% | 84% | 0.988 |
| 100% | 84% | 0.991 |
| 110% | 83% | 0.992 |
| 230VAC, 50Hz | ||
| Load | Efficiency | PFC |
| 10% | 81% | 0.890 |
| 20% | 86% | 0.924 |
| 50% | 88% | 0.930 |
| 80% | 87% | 0.955 |
| 100% | 85% | 0.973 |
| 110% | 84% | 0.975 |
Note the difference the power grid makes.115VAC means higher current and more stress for all power supplies, while 230VAC shows a worse power factor at all loads. Nevertheless, 0.890-0.975 PFC is very good and most users will find 86-88% efficiency more than sufficient. While it doesn't quite make 80% efficiencey at 10% load, it is a good 80 Plus Bronze PSU for sure. With a low input voltage power factor is always over 0.90.
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TheLaw5 - Saturday, May 21, 2011 - link
SMH. Guys, please learn what the hell you are talking about. There is no difference AT ALL in performance from a single rail unit and a multiple rail unit.The only difference is how the over current protection functions. There is none of this balancing BS you speak of.
You guys call yourselves computer gurus, and meanwhile don't have a clue what you are talking about. GJGJ
DarkUltra - Sunday, May 22, 2011 - link
Hi!I've tried two different PSUs and two graphics cards, but any combination have resulted in the PSU squealing when I use the graphics card.It's especially prudent in ATI Tool and when I have high FPS in menus or old games. So now i'm on the lookout for a psu that does not squeal when the gpu or the cpu is doing bad stuff.
I hear even the latest Corsair HX850W are squealing.
http://forum.corsair.com/v3/showthread.php?t=95360
Have you tested this PSU for squealing? What 3d card did you use?
I have tested with
Mist 650W rev 3.5
Mist 650W rev 4.0
xfx geforce gtx 285
evga geforce gtx 470
I read MSI once made non-squealing graphics cards, but I haven't heard anything since.
http://www.bit-tech.net/news/hardware/2009/05/29/m...